Forging-machine.



PATBNTED JUNE 5, 1906.

0. BRIEDB. POBGING MACHINE.

urnlonxol FILED 1113.3, moa.

l l Lili .lli I OTT() BRIEDE, 0F BENRATH, NEAR DUSSELDRF, GERMANY.

FORGlNG-MACHINE.

Specification of Letters Patent.

Patented J une 6, 1906.

Application iiled February 3VIII 1903.V Serial Ho. 141.738.

To all whom it may concern:

Be it known that I, O'r'ro BRIEDE, a sub ject of the King of Prussia, German Em eror, and a resident of Benrath, near Dusse dorf, in the Province of the Rhine, German Emire, have invented certain new andusefui in proveniente in Forging-Machines, of which the ioliowing is an exact specification.

such improvements being more especially ap-y pheahli` for the production of seamless tubes.

The invention has for its object a construe'V tion and combination .ofA parts whereby the ingot or bilet is moved back and forth B52 and with the swaging-dies and is also given alforlw'ard feed and partial rotation through t ie ies.

scribed and cia'imed. v 5

In the accompanying drawings Yforming a part of this specification, Figurel is a side eievation of my improved forging-machin,

a suitabie housing. The, movement of dies is effected from the driving mechanism through pitman 2 and arm 1, as shown in 1 and 2. These dies or swages are rou vi led with grooves the diameter of W 'ch .increases fromone end to the other end. The ingot or billet tube ogerated on is heid and supported by a suite le beider, may be of any form or construction adapted to the articleto be reduced. lIn the construction shown such holder consists of a ,n iandrel g,

,libc fsedtlvfmounted in Y carriage orslide d. In order that the feedhar may move at 5o or carriage and at other times independent thereof, springs 'i' and i3 are interposed between the bearings or abutments e e' and a collar or abutment f on the feed-bar. As the feed-bar is drawn forward by the swages Yswages `the spring under the The invention is hereinafter more fiiiiy'de-I which having a shonider or abutment at (Land connected by a coupling 4 toYY This feed-rod is niovahiym Y u i, bearings or abutments c e on the' with thefeed-bar f,

certain times with'the slideY in swingin to the right the spring t will be compresse but when the swages or dies sxvin in the opposite directionthe spring 'i' will e compressed, and when the in ot or biliet is released from the bite of the ies or l eater tension will become operative to s t the feed-bar.

Y Y The siide or carriage d can be shifted back The invention described herein relates to certain improvements in forging-machines,

Vand forth by any suitabie means-such, for examY le as that shown consisting of a threerred rod m, extending through the bearing c on the bed of the machine, and a power-driven wheel l.

The rod m is, as stated, threaded and engages the internallysthreaded hub of the wheehwhich is provided with a hollow journsi extending into the hearing o', so that the wheei wiil be held from movement, but free to rotate. A suitable means for rotating the wheel l consists of electric motors, as indicated, having a spur-wheel 7c. on their armature-shat and e' aging the Wheel I, which in this case is sinta ly toothed. As these motors will operate continuously, and thereby effect a continuous movement of the carri e or slide d toward the swa es it is evi dent that during a portion o the tiniei.. e., when the swa es swing to the left-the spring 'i' wiii be un er considerabe com ression. When, however, the swages i ease the ingot at the end of their movement the spring if'jvili expand and thrust the feed-bar forward, causing theV ingot or biiiet to'fiirther enter in between the sw es. Hence altho h the feed mechanism-ft. e., the slideand t e parts actuating the same move continnously the feed of the billetV or ingot in between the swages will be intermittent.

Anysuitabieor desirable means ma be employed for impartingrotation to the eedbar and the article carried thereby. A convenient means to this end consists of a ratchet-wheel u, having a 'ournal mounted inthe heaii e of the sii e or carriage, so

Ythat the ratc et-wheel will be free to turn,

het will be held as a ainst any movement viich has its rear portion angular inV cross-section and passes through the ratchet-wheel a..Y An arm or lever o is provided with a pawl adapted to enage the ratchebwheei andiis connected by a ar s to an arm extending from a head which is journai in a bear p of a longitudinally-movable rod p'. s rod p* is made angular in cross-section and sees through a similar opening in the 'head of the arm p, so that by a rotation of the arm p the arm p will be swu correspondingly. The rod p is adapted to k e shifted back and forth by any suitable means-e. g., by one of the arms 1, connected to the swa es. The rod p has a swiveled connection with this arm, so that it can be free to rotate. dThe rotation of the rod p, throug which the angu rod p' is moved, such a partial twist. By t 'ii-construction a rotation` to the feed-rod'will be effected 4by the movement of the swages. I t'is not necessary to s ecifically time this rotation of the feed-rod, or the reason that provision is made for the movement ofthe drivin -arm p Without affecting the feed-rod.V Tlliis consists of springs t and t", arranged on oplar portion of the posite sides of a swiveled block mounted on' the arm so that such arm can move freely back an forth without swinging the lever o, such movement merely compressing one or the other ofthe sp got or billet is release from the swa es after a compression of the s rings t an t such s ring can expand, an thereby im rt the esired rotation to the feed-bar an the article carried thereby.

In order to strip the finished tube from the `mandre1, suitable means,sueh as an am, as

indicated at w, is pivotallyrconnected to one side of the bed and in such 'relation to the mandrel and feed-bar that' it may be turned down to, engage the linished tube andhold the same as a ainst movement while the mandrel is being raWn back out of the tube.

It is characteristic of my referred form or nism that the construction of forging mec feed' mechanism is so constructed that the feed-pressure' is 'constantly exerted on the billet or other article, so that the instant the frictional grip of the swages is reduced suiii'- ciently the billet or other article will move forward until checked by contact of portions of the billet with the operative faces of the swages. This obviously will require that the spring acting on the mandrel-stem 4or billetcarrier shou d 'be under feed tension at the moment the swages release the billet. This end is best attained by maintaining the spring under constant tension and re lating-or vathe amount or degree ofgilliel tension as required by conditions of use. In other words, pressure is stored up and effects a forward or feed movement of the billet; but this lpressure should be such as not to revent the reverse movement of the billet. 4he loosening ofthe grip of the swages on the billet occurs when enlarged portions ofthe ooves move across a lane assing through t e axes of oscillation o lthe 'es or swages, as the feed occurs when the enlarged l portions ofy the grooves pass through a certain portion of the is effected by means of fixed nut;

tion being also given provision A A soon as the in- Aarc of oscillation ofthe dies or swa es, and as the feeding-pressure on the billets 1s constant it follows that the amount of feed exerted at any one time is dependent u n the rate of movement of enlarged or fee ing portions of the v es through such arc, or, in other wor s, the rate of feed of the billet is controlled primarily and to a great extent by the rate of oscillation ofthe dies or swages.

It will readily be seen that in amachine of this construction andV operation, es ecially if it be operated at a high speed, the illet as it is being reduced will in each movement forward and 'back receive a considerable momentum' and a momentum which should be prom tly arrested. To attain this end, a suita `le means of resistance should be employed by which to arrest any excess of mo me'ntum. Springs suitably arranged on the mandrel-@stem are believed to be t e best for this purpose, and such springs are illustrated herein. Of course their strength or tension of resistance should be suitably roportioned with reference to this end, and) their resili ence may be utilized in effecting the return movement of the billet with reference to the continuance of the operation described.

The term feed position as used herein is used purely for convenience of description. The workof this machine when in' operation goes on with a cycle or series of 'movements which must take place in" a certain order, though the order may be varied somewhat in diiferent machines. There mustfbe Ka -feeding movement of the billet, also a reducing stroke or movement of the dies, also a reverse stroke, and at or before the be of each feed movement the billet must be Vbrought b die or by conjoint action of die or other mec anism operating on the billet to a proper position for such feed. In a eneral way this position is the one I refer to y the lterm feed position and this Without reference to its particular place in the cycle of movements, except tha it must immediately los IIO

precede the feeding movement; but in practical operation the Work usually s onwith such' rapidity that the billet rare y if `ever occupies such feed position for more than an inaipyreciable time.

c herein as my inventions#- 1. In a forging-machine, the combination of oscillatory dies or swages, an inget or billet holder movable back and forth substantially synchronous with the dies or swages, and means for feeding the holder toward the dies or swages when released lfrom the dies or swages, substantially as described.

2. In a forging-machine, the combination of oscillatory dies or swages, an ingoia-holder movable back .and Vforth substantially and chronous with and by the dies or sw means for feeding the holder toward the dies or swages when 4released from the dies or swages, substantially as described.

and means for applying tension to tbe 3. In a forging-machine, the combination movable back and forth substantially sync* chronens with the dies or swa es, and resili-Y ent means for feeding the hol er toward theV dies or swages when released from. the dies orn swages, substantially as described.

4. In a forging-machine the combination of oscillatory swa es or dies, an ingot or billet holder springeld in each direction and movable and forth by the dies and means for feeding the holder toward the, dies or swages, substantiall as described.

5. In a for "ng-.mac e the combination of oscillatory les or swages, an ingot or billet holder movable back and forth substantially synchronous with and by the dies or V:rvwtges and a resilient means for feeding the holder toward the dies crswages, substantially as described.

6. In a forging-machine the combination of oscillato dies or swages, a movable carriage or sli e, a feed-bar movably mounted in bearings on said slide or carriage and adaptedto be reciprocated by the swages, springs interposed between saidY bearings and a1 abutment or shoulder on the feed-bar, and means for shifting the carriage or slide, substantially as described.

7. In a forging-machine the combination of oscillato dies or swages, a movable carri e or sli e, a feedbar movably mounted io earings on said slide or carriage, springs interposed between said bearin and an abutment or shoulder on the fee -bar and a continuously-operating means for shifting the bearings or carriage, substantially as described.

8. In a forging-machine the combination with sWaging-tools and means for actuating them, a rotatable ingrat-holder, a sprin for exerting pressure to turn the ingot-bo der, ring duri the swaging action, substantie y as descri ed.

9. In a forging-machine the eomlafination of two sector-formed ieces 'plo''illedV with grooves, the diameter o which increases from one end to the other, with means for oscillating these pieces, an i ot-holder, a slidin carriage in-ffwhicb'osaid older is journals means for resiliently connecting one of sai sector-formed pieces to said oa-holder for exerting pressure to turn sai in oa-holder and means for shifting the ingot-ho der independent cf the carriage, substantially as described.

10. in a forgin -machine the combination with swaging-too s, and means for actuating them, of a rotatable holder, resilient meansY for applying turning pressure to the holder during the action of the swaging-tools and means for advancing the ingot, substantially as described.

1 1. In a forgingmachine the combination of devices, an We of oscillatolydies or swages, an ingot-holderV af'sle, d; carrying 'tbe ingotod'er ijizprovided between Ythi'sslide and t "e tages-h'Y er, means for thefside, d, an'rfieer o, for rotating their otiholder,

Ytine lever, p, and bar, s, passing free y throngh 'isV 12. In a mixing-sainte combination of QS- l cillatory swa i devices an ingoia-holder connection interposed; be

and a mechanl Y tween the ingot-ii'older and theswages Yand comprising a shaft reciprocated by th'srages during tbeirebseiatien and means'adapted Sie to be operated bythe shaft for rotatngtbe' Y ingot-bolder,"substantially as described. c' *Y 13. In a for g-machine the combination of oscillatory ies or swages, means for supporting the billet or other article and adapted to permit the billet to reciprocate synchronously with the dies or swages and means for constantl exerting resilient feeding pressure on the b' et or other article, substantially as described.Y Y

14. In a forging machine the combination of oscillatin dies or sWa es, varresilicnt or spring mem er, and a b' etjholder free to move longitu'dinally at all times exceptas controlla by said dies and by resilient V,spring actiee'nfV Y' Y 15. In a for g-machine tbe combination of oscillatory or swages, an ingoia-bolder pemittin the reciprocation of the invetp'older an ada ted to eeet a forward; Yor Feed movement of t e holder on tbe release of the ingt'by the swages, substantially as dei scribed.

16. 'In afo'rVV g-macbine the combination o'osciilatory or swages, an ingot-holder movable backend forth substantially synchronous with the dies or swages, mechanism for effecting a forward or feed movement of the ingrat-bolder, and means ermitting a reci rocation of the Y' ot-holdbr inde endent o the feed orfcrwa movement an adapted to render the feed eiective on the release of the ingot from tbe bite of the swa es.V

17. In a forging-machine the corn ination of oscilljatnryswages means for rotating the billetneetlrr article comprising a rotary memberand mechanismfor rotating thesame, said mechanism including a yielding element adapted toV exerts Yyielding force on the rotary member While the billet is gripped by the swages and to become effective to rotate said member when the billet is released. f

18. In a orgngsmachine, the combination of swagingtools, means for actuating them, a rotatable holder, means for turning tbe holder ieg IIC

operative during the action of the swagingtools, and having a yielding connection to the holder whereby the turning means becomes operative to turn the holder when the latter is released from thedies or swages, and means for advancing the ingot, substantially as described.

19. In a machine for forging tubes, the combination of oscillatory dies or swages, a mandrel movable back and forth substantially synchronous with the dies or swages, and means for feedin the mandrel toward the dies or swages, w en released from the dies or swages, substantially as described.

20. In a machine for forging tubes, the combination of oscillatory .dies or swages, a mandrel movable back and forth substantially synchronous With and b the dies or swages, and means having a yie ding connection with the mandrel for feeding the latter toward the dies or swages when released therefrom, substantially as described.

21. In a fo ing-machine the combination of oscillatory ies or swages, a billet-carrier adapted to permit the billet to reciprocate with respect thereto synchronously with the dies or swages and means for exerting a constant pressure on the carrier to feed the billet.

22. In a forging-machine the combination of a carrier adapted to permit the billet to move back and forth with respect thereto, oscillatory dies or swages adapted to engage the billet and impart to it a back and forth movement, means for imparting a feed movement to the carrier and a yielding resistance device adapted to operate against the billet While being reduced.

23. In a forging-machine the combination of oscillator dies or swages, a billet-carrier and means or exerting constantly a feeding pressure on the carrier during the reduction of the billet. i

24. In a forging-machine the combination of a carrier provided with means whereby the billet may move back and forth with respect thereto, oscillatory dies or sWages adapted to engage the billet and impart to it a motion in both directions forward and back, means for imparting a feed movement to the carrier and a yielding resistance device arranged to operate against the billet on its reverse motion.

25. In a forging-machine the combination of oscillatory dies or swages, a carrier provided with yielding means for supporting the billet and means for exerting a constant feeding pressure on the carrier.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

OTTO BRIEDE.

Witnesses:

PETER LIEBER, ERNEST ANDR. 

